Chief of Faculty of Biochemistry (1971-2000), the Pro-rector (1985-1989) of YSU, Minister of national education (1989-1990), the Pro-rector (1990-1991), Decan of the biological faculty (1995-1999) of YSU, the Rector of Armenian State Pedagogical Institute by name H.Abovjan (1999-2002). Honoured Statesman of Sciences ASSR (1981)